I didn't make it!
I downloaded a SP luke skywalker mod from jk3 files and when i start a single player game all the characters dissapear, so if you have any helpful advice I would appreciate it.
was it mine? (master_ibonek)
If you haven't patched to v1.01, do so.
Should that fail to fix it, you'll probably need to check for conflicting mods.
I don't know how, and I don't know why, but this is totally Sheep's fault.